Charles a



(No Model.)

' 0.. A. EVARTS.

CENTRAL DRAFT LAMP.

N0. 430,380. Patented June 17, 1890.

NITED STATES PATENT OFFICE CHARLES A. EVARTS, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE BRAD-- LEY & HUBBARD MANUFACTURING COMPANY, OF SAME PLACE.

CENTRAL-DRAFT LAM P.

SPECIFICATION forming part of Letters Patent No. 430,380, dated June 17, 1890.

Application filed December 30, 1889. Serial No. 335,352. (No model.)

To all whom it may concern:

Be it known that 1, CHARLES A. EVARTS, of Meriden, in the county of New Haven and State of Connecticut, have invented a new Improvement in ick-Adjusters for Central- Draft Lamps, (B 3) and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a side view of a wick-adjusting device, showing a section of the top of the fount through which the rod passes; Fig. 2, a side view of the wick-adjuster, looking from the right of Fig. 1; Fig. 3, a transverse section on line a as of Fig. 1; Fig. 4, a side view of the catch detached.

This invention relates to an improvement in wick-adjusters for central-draft lamps, and particularly to that class in which the wick is adjusted by means of a rod movable vertically through the top of the fount, the wick being provided with a surrounding sleeve, witlr which said rod is engaged, so that the vertical movement of the rod will impart corresponding vertical movement to the wick, the object of the invention being to make afirm engagement between the said rod and wick-sleeve, but yet permit its easy attachment; and it consists in the construction as hereinafter described, and particularly recited in the claim.

A represents the wick-sleeve, which is constructed with an annular groove B, forming two shoulders to and b, the one above the other.

In United States Patent No. 387,156, granted to me July 31, 1888, a wick-adj usting sleeve of this construction is shown, the groove of the sleeve being designed for engaging the sleeve with the wick-adj uster. In that case the wickadjusting rod is provided with a horizontal circular spring, corresponding in diameter to the diameter of the sleeve in the groove, and so that by laterally turning the spring it may be forced onto the sleeve and so as to grasp it within the groove. I

To simplify the construction, and yet make a firm engagement between the wick-adjusting rod and the sleeve, the wick-adjusting rod 0 is arranged to slide through a suitable bearing in the top D of the fount, the rod extending downward, then turned up in U shape, the one leg, which extends through the top of the 'fount, provided with a suitable handle by which it may be readily operated. The other leg E is turned up parallel with the axis of the wick and carries a catch F hung upon its upper end. This catch is of segmental shape and of a width corresponding substantially to the width of the groove B, and so as to lie therein, but yet so that it may be turned therefrom, as represented in broken lines, Fig. 3. The catch is constructed with a transverse slot G. (See Fig. 4.) This slot terminates at one end in an enlargement H, and in the groove 13 is a headed stud I, (see Fig. 3,) the head of which corresponds substantially to the enlarged end II of the slot and the body of the stud to the slot G. The catch F is placed upon the stud I by turning the sleeve to a position that the head may pass through the enlarged part H of the slot, and, as in broken lines, Fig. 3, then by turning the sleeve from this enlarged portion the stud is carried into the slot, the head being upon the outside of the catch,as clearly seen in Figs. 2 and 3, thereby interlocking the sleeve with the catch and Wick-adjusting rod and so that the up and down movement of the adjusting-rod will be communicated to the wick-sleeve, the catch taking firm engagement with the sleeve between the shoulders a b and as seen in Figs. 1 and 2. The catch terminates at its free end in an outward projection J, to which the finger may be readily applied to turn the catch from the groove.

As in my previous patent, so in this case, when it is desired to introduce or remove 0 the wick the rod is raised so far as to bring the wick-adjusting sleeve above the top of the fount and so as -to expose the engaging device. The construction of this engaging device is such as to be readily understood, 5 and simply requires a rotation of the sleeve to make disengagement between it and the catch, and then the catch turned laterally from the groove in the sleeve. The sleeve is free to be Withdrawn from the fount and is I00 reset and engaged by a reverse rotation.

From the foregoing it will be understood 0, one leg of the rod extending through the top of the fount and guided thereby, the other leg turned up substantially parallel with the adjusting-sleeve A, a catch F upon the said second leg of said rod and corresponding to said groove B in the sleeve, the catch constructed with a transverse slot G, terminating at one end in an enlarged opening, and the groove B, provided with a headed stud I, corresponding to said slot and enlarged opening, substantially as described.

CHARLES A. EVARTS. \Vitnesses:

F. B. FAIRBANKS, A. E. HALL. 

